Global Patent Index - EP 0998084 A2

EP 0998084 A2 2000-05-03 - Phase-shift-keying demodulator and demodulation method using a period-width windowing technique

Title (en)

Phase-shift-keying demodulator and demodulation method using a period-width windowing technique

Title (de)

PSK-Demodulator sowie PSK-Demodulationsverfahren, die ein Periodendauerfensterungsverfahren verwenden

Title (fr)

Démodulateur et procédé de démodulation de signaux MDP qui employent une technique de fenêtrage de la largeur de la période

Publication

EP 0998084 A2 (EN)

Application

EP 99308181 A

Priority

US 18181098 A

Abstract (en)

A demodulator (10) demodulates a PSK communications signal using a synchronizer (12), a period window detector (20), and a logic device (22). The synchronizer provides a transition signal representing reference edges of the communication signal. The period window detector, coupled to the synchronizer, establishes a time interval based on the period of the transition signal. Finally, the logic device, having logic inputs coupled to the outputs of the period-window detector, yields a logic output signal. The demodulator preferably includes a carrier boundary detector (34) for framing messages and minimizing noise detection in a manner that permits signal strength measurements over a wide d ynamic range. <IMAGE>

IPC 1-7 (main, further and additional classification)

H04L 27/233

IPC 8 full level (invention and additional information)

H04L 27/227 (2006.01); H04L 27/22 (2006.01); H04L 27/233 (2006.01)

CPC (invention and additional information)

H04L 27/2337 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 0998084 A2 20000503; EP 0998084 A3 20031008; EP 0998084 B1 20070207; AU 5597999 A 20000504; BR 9905875 A 20000905; CA 2284138 A1 20000429; CN 1253443 A 20000517; DE 69935055 D1 20070322; DE 69935055 T2 20070719; JP 2000151733 A 20000530; JP 3659476 B2 20050615; KR 20000047572 A 20000725; US 6341146 B1 20020122

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